CONTROL TECHNIQUES OF HIGH STEP UP CONVERTER FOR PHOTOVOLTAIC SYSTEM

Abstract: In this paper, the comparison between Hysteresis current control technique and SPWM control technique of high step up converter for photovoltaic system is presented with the help of MATLAB simulation. To improve the voltage gain of system and to reduce its Total Harmonic Distortion value in output, Hysteresis current control technique is used for step up converter and voltage multiplier module for the photovoltaic system. Simulation of both the methods SPWM (open loop) and Hysteresis control (closed loop) is done on the basis of THD performance and it is observed that THD percentage are reduced from 3212.66% to 63.96% .

Keywords: High step up converter, control methods of converter, photovoltaic system, Total Harmonic Distortions.